Run results for: JS switch vs if/else if

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/133.0.6943.120 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 133

Operating system: iOS 18.3.1

Device Platform: Mobile

Date tested: one year ago

switch

486.3M/s

if/else if

465.3M/s

View exact numbers

Test name	Executions per second
✓ switch	486,322,848 Ops/sec
if/else if	465,307,488 Ops/sec

Script Preparation code:

var test = 'test'

Tests:

switch
switch(test) { case 'test1': return true; case 'test2': return true; case 'test3': return true; case 'test4': return true; case 'test5': return true; default: return true; }
if/else if
if (test === 'test1') { return true; } else if (test === 'test2') { return true; } else if (test === 'test3') { return true; } else if (test === 'test4') { return true; } else if (test === 'test5') { return true; }

Run results for: JS switch vs if/else if

Benchmark of the speed difference between using multiple IF statements and an open-ended IF/ELSE IF.

switch

if/else if